CN101038183A - Fibre-optical freezing sensor - Google Patents
Fibre-optical freezing sensor Download PDFInfo
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- CN101038183A CN101038183A CN 200710051934 CN200710051934A CN101038183A CN 101038183 A CN101038183 A CN 101038183A CN 200710051934 CN200710051934 CN 200710051934 CN 200710051934 A CN200710051934 A CN 200710051934A CN 101038183 A CN101038183 A CN 101038183A
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Abstract
The present invention provides a fiber type ice coating sensor that pertains to a photoelectric sensor and that is used for detecting the degree of the ice coating on the surface of the object. The aim of the present invention reside in making the sensor more subminiature, more light, and making a minimal sensitivity and a best lower limit performance, and making a low cost, a simple signal processing without using sensitive material. The emitting fiber beam and the receiving fiber beam in the present invention are combined to from an integrated fiber beam: the end surface of the integrated fiber beam forms the end surface of the detecting head; the other end of the emitting fiber beam is provided with an emitting circuit; the other end of the receiving fiber beam is provided with a signal detecting circuit consists of a photorectifier and a amplifying preampcircuit which are connected in series. The fiber type ice coating sensor which is suitable for detecting the degree of the ice coating on the surface of the object is small, light and in a multiple-point distribution. The fiber type ice coating sensor without detachable accessories also has a good electromagnetic compatibility, a high reliability and a simple processing of signals.
Description
Technical field
The invention belongs to photoelectric sensor, be specifically related to a kind of fibre-optical freezing sensor, be used for the body surface situation of freezing is detected.
Background technology
Be used for the icing freezing sensor of surveying of aircraft at present many deficiencies are arranged: the radioactive ray formula is healthy harmful to human body; Conductivity formula reliability is relatively poor; The differential pressure type volume is big, complex structure.And these several freezing sensors all can not provide the quantitative information about the order of severity of freezing.Nearest magnetostrictive vibration movable barrel type and the piezoelectric resonant diaphragm type freezing sensor that occurs, can provide the quantitative information of the order of severity of freezing in certain ice thickness scope, but magnetostrictive vibration movable barrel type freezing sensor volume and weight is bigger, complex structure, the production cost height can only be installed on the fuselage part, can not flush conformal and be installed on some position of aircraft, as the leading edge of a wing, and minimum detection limit also unsatisfactory (external 0.254mm, the domestic 0.300mm that is about).Though piezoelectric resonant diaphragm type freezing sensor volume, weight are less, can flush conformal and be installed on machine top-surface camber position, minimum detection limit performance reaches about 0.10mm, better than magnetostrictive vibration movable barrel type, but tighter to the sensitive material requirement, production cost is higher, the signal Processing more complicated.
Summary of the invention
The invention provides a kind of fibre-optical freezing sensor, purpose is can be more microminiaturized, and weight is lighter, and it is better that sensitivity and minimum detect the lower limit performance, do not need sensitive material simultaneously, and production cost is lower, and signal Processing is fairly simple.
A kind of fibre-optical freezing sensor of the present invention comprises the launching fiber bundle and receives fibre bundle, it is characterized in that: described launching fiber bundle is with the reception optical fiber bundle end portion and become to concentrate fibre bundle, concentrates the end face of fibre bundle to constitute the detecting head end face; The launching fiber bundle other end is equipped with radiating circuit, receives the fibre bundle other end signal deteching circuit is housed, and signal deteching circuit is composed in series by photodiode and pre-amplification circuit.
Described fibre-optical freezing sensor is characterized in that: launching fiber bundle and reception fibre bundle distribute for evenly distribution at random, concentric circles distribution or semicircle at the end face distribution form of concentrating fibre bundle.
Described fibre-optical freezing sensor is characterized in that: the profile of described detecting head end face is a helicitic texture; Described launching fiber bundle and reception optical fiber bundle end portion are equipped with the connector of threaded structure, are used for connecting respectively radiating circuit and signal deteching circuit.
Launching fiber bundle and reception optical fiber bundle end portion merge formation Y type conduction fibre bundle, constitute basic structure of the present invention, concentrate the end face formation detecting head end face of fibre bundle, screw in the testee surface.Do not have when testee surface and to freeze when taking place, the emission light of luminescent device along the launching fiber bundle, concentrate the fibre bundle transmission and inject air by the detecting head end face, photodiode is surveyed less than any emission light.When the testee surface has ice to form, emission light produces phenomenons such as reflected light, scattered light and radiative transmission, absorption in ice sheet, the reflected light of ice sheet-air interface wherein and the part scattered light in ice sheet enter the reception fibre bundle through the detecting head end face, photodiode will receive the luminous energy that fibre bundle obtains and convert electric current in the signal deteching circuit, and be enlarged into voltage signal through the pre-amplification circuit conversion.In certain ice thickness scope, the size of this voltage signal is for being good single-valued function relation with ice thickness, just can realize detection to ice layer thickness so obtained voltage signal.
Size of the present invention is little, and is in light weight, but the multiple spot distribution, Electro Magnetic Compatibility is better, does not have movable annex, the reliability height, and signal Processing is simple; Be applicable to the body surface situation of freezing is detected.
Description of drawings
Fig. 1 is a schematic diagram of the present invention;
Fig. 2 is a circuit part schematic diagram of the present invention;
Fig. 3 is the structural map of the embodiment of the invention;
Fig. 4 is the end face structure vertical view of the embodiment of the invention, and launching fiber bundle and reception fibre bundle distribute at the end face concentric circles of concentrating fibre bundle;
Fig. 5 is the launching fiber bundle and receives fibre bundle at the equally distributed at random enforcement state of end face of concentrating fibre bundle;
Fig. 6 is the launching fiber bundle and receives the enforcement state that fibre bundle distributes at the end face semicircle of concentrating fibre bundle.
Embodiment
Now the present invention is specified in conjunction with Fig. 1 to Fig. 4.
In Fig. 1, launching fiber bundle 7 with receive fibre bundle 4 ends and become to concentrate fibre bundle 8, its end face formation detecting head end face 3, its contour structures are one metal threaded, are convenient to screw in testee surface 2 and reach and flush the installation purpose.Luminescent device 6 operation wavelengths are near infrared in the radiating circuit, with the interference of the visible light in the elimination bias light to testing circuit.Do not have when testee surface 2 and to freeze when taking place, the emission light of luminescent device 6 along launching fiber bundle 7, concentrate fibre bundle 8 transmission and inject air by detecting head end face 3, photodiode 5 is surveyed less than any emission light.When testee surface 2 has ice to form, emission light produces the reflected light shown in RL among the figure in ice sheet 1, with the scattered light shown in SL among the figure, and phenomenon such as radiative transmission, absorption, the reflected light of ice sheet-air interface wherein and the part scattered light in ice sheet enter through detecting head end face 3 and receive fibre bundle 4, photodiode 5 will receive the luminous energy that fibre bundle 4 obtained and convert electric current in the signal deteching circuit, and be enlarged into voltage signal through the pre-amplification circuit conversion.
In Fig. 2, comprise the photoelectric detective circuit of photodiode 5, be actually one and convert light to transducer that electric current converts voltage again to.Photodiode 5 will receive the luminous energy that fibre bundle 4 obtained and convert electric current to, and be enlarged into voltage signal Vo through the pre-amplification circuit conversion.
Fig. 3 and Fig. 4 are one embodiment of the present of invention, among Fig. 3, and launching fiber bundle jacket 9, the screw thread nominal diameter of connector 10 is 4mm; These embodiment detecting head end face 3 fibre bundles distribute, and employing launching fiber bundle 7 in end face sheath 11 is positioned at the axle center, reception fibre bundle 4 becomes coaxial concentric circles to arrange with it, and the screw thread nominal diameter of end face sheath 11 is 10mm.Utilize the scarp slope of its modulation characteristics curve to measure and can realize higher sensitivity and be convenient to signal Processing, in addition, arranged in co-axial alignment is easy to make, and structural symmetry, and grain direction and tested surface tilt less to its influence.
Launching fiber bundle 7 and reception fibre bundle 4 can also distribute for even at random distribution or semicircle as shown in Figure 6 as shown in Figure 5 at the distribution form of probe end face 3.Concrete distribution form will be taken all factors into consideration the factors such as size restrictions of measuring of ice thickness range, transducer sensitivity and combination of fiber-optic bundle and determine.Among Fig. 4,5,6, the expression launching fiber bundle 7 that oblique line is tilted to the left on the cross section; The expression that oblique line is tilted to the right on the cross section receives fibre bundle 4.
Claims (3)
1. a fibre-optical freezing sensor comprises the launching fiber bundle and receives fibre bundle, it is characterized in that: described launching fiber bundle is with the reception optical fiber bundle end portion and become to concentrate fibre bundle, concentrates the end face of fibre bundle to constitute the detecting head end face; The launching fiber bundle other end is equipped with radiating circuit, receives the fibre bundle other end signal deteching circuit is housed, and signal deteching circuit is composed in series by photodiode and pre-amplification circuit.
2. fibre-optical freezing sensor as claimed in claim 1 is characterized in that: launching fiber bundle and reception fibre bundle distribute for evenly distribution at random, concentric circles distribution or semicircle at the end face distribution form of concentrating fibre bundle.
3. fibre-optical freezing sensor as claimed in claim 1 or 2 is characterized in that: the profile of described detecting head end face is a helicitic texture; Described launching fiber bundle and reception optical fiber bundle end portion are equipped with the connector of threaded structure, are used for connecting respectively radiating circuit and signal deteching circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710051934 CN101038183A (en) | 2007-04-23 | 2007-04-23 | Fibre-optical freezing sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710051934 CN101038183A (en) | 2007-04-23 | 2007-04-23 | Fibre-optical freezing sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101038183A true CN101038183A (en) | 2007-09-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200710051934 Pending CN101038183A (en) | 2007-04-23 | 2007-04-23 | Fibre-optical freezing sensor |
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| CN (1) | CN101038183A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103940352A (en) * | 2014-04-25 | 2014-07-23 | 广州飞拓优视光电科技有限公司 | Ultra-high-precision freezing detecting device and real-time freezing thickness detecting method thereof |
| CN104395690A (en) * | 2012-06-13 | 2015-03-04 | 株式会社新柯隆 | Device for measuring film thickness and device for forming film |
| CN105628654A (en) * | 2016-02-05 | 2016-06-01 | 华中科技大学 | Icing photoelectric sensor and icing measuring device |
| CN105737745A (en) * | 2016-02-05 | 2016-07-06 | 国网浙江省电力公司杭州供电公司 | Power transmission line icing detection system |
| CN107906823A (en) * | 2017-06-27 | 2018-04-13 | 邹庆丰 | Detect the method to freeze, de-icing method and the refrigerator using this method |
| CN109781017A (en) * | 2019-03-21 | 2019-05-21 | 四川嘉瑞丰科技有限公司 | A kind of quick calibrating method of fibre-optical freezing sensor |
| CN114194400A (en) * | 2022-02-15 | 2022-03-18 | 中国空气动力研究与发展中心低速空气动力研究所 | Optical fiber icing detection device capable of self-identifying fault and fault detection method |
| CN116086368A (en) * | 2023-03-07 | 2023-05-09 | 中国空气动力研究与发展中心低速空气动力研究所 | Icing thickness detection method, icing thickness detection device and storage medium |
-
2007
- 2007-04-23 CN CN 200710051934 patent/CN101038183A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104395690A (en) * | 2012-06-13 | 2015-03-04 | 株式会社新柯隆 | Device for measuring film thickness and device for forming film |
| CN104395690B (en) * | 2012-06-13 | 2017-05-31 | 株式会社新柯隆 | Film thickness measurement device and film formation device |
| CN103940352A (en) * | 2014-04-25 | 2014-07-23 | 广州飞拓优视光电科技有限公司 | Ultra-high-precision freezing detecting device and real-time freezing thickness detecting method thereof |
| CN105628654A (en) * | 2016-02-05 | 2016-06-01 | 华中科技大学 | Icing photoelectric sensor and icing measuring device |
| CN105737745A (en) * | 2016-02-05 | 2016-07-06 | 国网浙江省电力公司杭州供电公司 | Power transmission line icing detection system |
| CN107906823A (en) * | 2017-06-27 | 2018-04-13 | 邹庆丰 | Detect the method to freeze, de-icing method and the refrigerator using this method |
| CN109781017A (en) * | 2019-03-21 | 2019-05-21 | 四川嘉瑞丰科技有限公司 | A kind of quick calibrating method of fibre-optical freezing sensor |
| CN114194400A (en) * | 2022-02-15 | 2022-03-18 | 中国空气动力研究与发展中心低速空气动力研究所 | Optical fiber icing detection device capable of self-identifying fault and fault detection method |
| CN114194400B (en) * | 2022-02-15 | 2022-04-29 | 中国空气动力研究与发展中心低速空气动力研究所 | Optical fiber icing detection device capable of self-identifying fault and fault detection method |
| CN116086368A (en) * | 2023-03-07 | 2023-05-09 | 中国空气动力研究与发展中心低速空气动力研究所 | Icing thickness detection method, icing thickness detection device and storage medium |
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